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Chromium toxicity in Sesbania sesban (L.) Merr

100%

Bakiyaraj R., Mahakavi T., Baskaran L.

International Letters of Natural Sciences

2014

tom 04

Chromium is one of the most common toxic metals present in the environment that induces various toxic effects in plants. A pot experiment was conducted to determine the effects of chromium on germination percentage, seedling growth, chlorophyll ‘a’, ‘b’ and proline content of Sesbania sesban (L.) Merr. The seedlings were treated with different concentrations of control, 0.10, 0.25, 0.50, 0.75 and 1.00 g kg-1 of chromium. The parameters such as germination percentage, root and shoot length, seedling fresh weight dry weight, chlorophyll ‘a’, ‘b’ and proline content of leaves were measured. Our results indicated that a significant inhibitory effect was observed at all levels of chromium compared to control. Increasing the concentration of chromium to 1.00 g kg-1 showed a significant decrease in seed germination, shoot and root length, fresh weight, dry weight and chlorophyll ‘a’ and ‘b’ content of plant. While proline, catalase and peroxidase contents were increased by increasing Cr concentration. It was also noted that accumulation of chromium in the roots was much higher than the shoots of the seedlings under treatment.

Sesbania grandiflora diminishes oxidative stress and ameliorates antioxidant capacity in liver and kidney of rats exposed to cigarette smoke

88%

Ramesh T., Sureka C., Bhuvana S., Hazeena Begum V.

Journal of Physiology and Pharmacology

2010

tom 61

nr 4

467-476

Cigarette smoke is a major risk factor for many chronic diseases. However, it may be possible to relieve the smoke-induced damage by increasing the defensive system. In this study, we planned to evaluate the protective mechanism of Sesbania grandiflora (S. grandiflora) leaves against cigarette smoke-induced oxidative damage in liver and kidney of rats. Adult male Wistar-Kyoto rats were exposed to cigarette smoke for a period of 90 days and consecutively treated with S. grandiflora aqueous suspension (SGAS, 1000 mg/kg body weight per day by oral gavage) for a period of 3 weeks. Hepatic marker enzymes like aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP), as well as renal markers such as urea and creatinine were analysed in serum. Lipid peroxidation marker mainly thiobarbituric acid reactive substances (TBARS) and antioxidant enzymes namely superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione-S-transferase (GST) and glucose-6-phosphate dehydrogenase (G6PDH) activities and non-enzymatic antioxidants such as reduced glutathione, ascorbic acid and a-tocopherol levels were studied. In addition, micronutrients mainly copper (Cu), zinc (Zn), manganese (Mn) and selenium (Se) levels were analyzed in liver and kidney of rats exposed to cigarette smoke. The results indicated that SGAS significantly decreased the elevated hepatic, renal and lipid peroxidation markers and ameliorated the diminished antioxidant levels while restored the hepatic and renal architecture in cigarette smoke-exposed rats. This study concludes that S. grandiflora leaves restrain cigarette smoke-induced oxidative damage in liver and kidney of rats.

Natural enemy (Arthropoda-Insecta) biodiversity in vegetable crops in Northeastern Tamil Nadu, India

75%

Anbalagan V., Paulraj M. G., Ignacimuthu S., Baskar K., Gunasekaran J.

International Letters of Natural Sciences

2016

tom 53

Natural enemies of insect pests in vegetable crops (brinjal, okra and tomato) were recorded and their diversity was studied in Kancheepuram and Tiruvallur Districts, Tamil Nadu. Natural enemies were collected by pitfall traps, sweeping nets and by hand picking from January 2011 to December 2013 twice in a month. Totally 129 species of predatory and parasitic insects were recorded. All the natural enemies were grouped into 50 families under eight different orders. Order hymenoptera contained the highest number of families and species. Among the predators, Coccinellidae (ladybird beetles) was found to be the dominant group with high number of species. It was clear that Coccinellidae, Staphylinidae, Carabidae and Pentatomidae were the predominant natural enemies throughout the study period. In 2013, formicidae formed the major family of occurrence from July to December in the vegetable fields; in this period the total number of individuals collected from all families was the highest. The maximum Shannon-Wiener diversity index was 3.70 during the second season in 2013. Maximum richness (5.99) was recorded in the second season of 2012. The variations in the diversity, species richness and evenness between two cropping systems are discussed in this paper.

Ograniczanie wyników

2 International Letters of Natural Sciences

1 Journal of Physiology and Pharmacology

1 Anbalagan V.

1 Bakiyaraj R.

1 Baskar K.

1 Baskaran L.

1 Bhuvana S.

1 Gunasekaran J.

1 Hazeena Begum V.

1 Ignacimuthu S.

1 Mahakavi T.

1 Paulraj M. G.

1 Ramesh T.

1 Sureka C.

1 2016

1 2014

1 2010

Wyniki wyszukiwania

Chromium toxicity in Sesbania sesban (L.) Merr

Sesbania grandiflora diminishes oxidative stress and ameliorates antioxidant capacity in liver and kidney of rats exposed to cigarette smoke

Natural enemy (Arthropoda-Insecta) biodiversity in vegetable crops in Northeastern Tamil Nadu, India